Agreed, hunting is still as raw and primitive as sticks and strings and loin clothes IF we want it to be. However, marketers have preyed (very successfully I might add) to the laziness and untuned and unrefined nature of modern man.
You don't need camo to kill a deer. You don't need a fancy broadhead to kill a deer and you don't need scent blocker to kill a deer. But you might if you are lazy, out of practice or can't read the wind or sign and predict where a deer will be traveling.
So the modern "tools" you are refering to are just that--tools to aid the guy that wants it easier or wants to think he will increase his chances of success.
Because we no longer hunt for sustence and survival, our keen senses and interpretations of sign and connection with Mother Nature and all things wild are being bred out of us. You don't need this if you have all the latest tools and gadgets and can shoot a rifle 450 yards. You need one bullet and ten minutes of time and you can kill a deer.
BUT if your life and your families lives depended on your making a close range shot on a deer simply to survive, then you also wounldn't need all that stuff because you would be the ultimate predator that we as humans used to be. A hungry man learns much much much faster than a fat man!
So even though I agree with you 100%, I suggest that you continue to laugh at the marketing and effort made and steer clear of it all whle letting those that feel they need those "tools" continue to spend their hard earned money that also supports much of our shooting and outdoor industries. We need the tax monies so I am glad that there are those out there stimulating the economy.
But I also don't want to knock the way others elect to hunt, just as long as it it legal. If it is legal in your state or province, and you want to do it, then I support your right to hunt however it is, whether or not I elect to do the same.